GB1318908A - Constant surface speed ma'hine tool control system - Google Patents

Constant surface speed ma'hine tool control system

Info

Publication number
GB1318908A
GB1318908A GB5130770A GB5130770A GB1318908A GB 1318908 A GB1318908 A GB 1318908A GB 5130770 A GB5130770 A GB 5130770A GB 5130770 A GB5130770 A GB 5130770A GB 1318908 A GB1318908 A GB 1318908A
Authority
GB
United Kingdom
Prior art keywords
speed
workpiece
fed
control
multiplier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB5130770A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Publication of GB1318908A publication Critical patent/GB1318908A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/182—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by the machine tool function, e.g. thread cutting, cam making, tool direction control
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/34—Director, elements to supervisory
    • G05B2219/34041—Dda
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/43—Speed, acceleration, deceleration control ADC
    • G05B2219/43141—Surface, path, tangential speed
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/45—Nc applications
    • G05B2219/45141—Turret lathe
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/30084—Milling with regulation of operation by templet, card, or other replaceable information supply
    • Y10T409/300896—Milling with regulation of operation by templet, card, or other replaceable information supply with sensing of numerical information and regulation without mechanical connection between sensing means and regulated means [i.e., numerical control]

Landscapes

  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Numerical Control (AREA)
  • Automatic Control Of Machine Tools (AREA)

Abstract

1318908 Programmed control of machine tools; automatic control of linear speed GENERAL ELECTRIC CO 28 Oct 1970 [12 Dec 1969] 51307/70 Headings G3N and G3R [Also in Divisions B3 and G4] A control system for a machine tool, controls the speed of rotation of the workpiece so that the linear speed at the cutting tool is constant. A tape reader 44 feeds data to arithmetic unit 42 which has a delay line store 36. The tool drive is controlled by digital signals from the arithmetic unit to servo drive controls 46 and 48 which control motors 30 and 34. The speed of rotation of the workpiece is measured by encoder 68 and fed to speed control 49 which controls the speed of rotation of motor 20 via servo drive 50. In the speed control unit Fig.3 a digital signal representing the required surface speed is fed into multiplier 60 together with a clock frequency from clock 41, via frequency divider 66, to produce a pulse output, whose frequency represents the speed. This signal is multiplied by 1/2# in multiplier 62 and fed to variable phase counter 78. The actual speed of the workpiece is encoded by encoder 68 and fed to multiplier 64 together with a digital signal R representing the current radius of the workpiece, derived from the arithmetic unit. The output of multiplier, 64 thus represents the linear surface speed of the workpiece multiplied by 1/2#, and is fed to variable phase counter 80. The phase of the two counters are compared by a comparator 82, and a difference signal is derived representing the difference between the actual and desired surface speed of the workpiece. This difference is fed to digital to analogue converter 84 and then to the servo drive 50 for the workpiece motor 20. In a second embodiment the workpiece speed is not measured directly, but simulated from the speed control signals supplied to the variable phase counters 78 and 80.
GB5130770A 1969-12-12 1970-10-28 Constant surface speed ma'hine tool control system Expired GB1318908A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US88441769A 1969-12-12 1969-12-12

Publications (1)

Publication Number Publication Date
GB1318908A true GB1318908A (en) 1973-05-31

Family

ID=25384583

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5130770A Expired GB1318908A (en) 1969-12-12 1970-10-28 Constant surface speed ma'hine tool control system

Country Status (6)

Country Link
US (1) US3665170A (en)
JP (1) JPS4931508B1 (en)
DE (1) DE2060227C3 (en)
FR (1) FR2070834B1 (en)
GB (1) GB1318908A (en)
SE (1) SE360481B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4897778A (en) * 1983-08-04 1990-01-30 Canon Kabushiki Kaisha Motor control device
GB2276957A (en) * 1993-04-08 1994-10-12 Langston Corp Automatic variable speed anvil system for rotary die-cut apparatus

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE395844B (en) * 1975-06-17 1977-08-29 Asea Ab PERIOD SPEED CONTROL DEVICE FOR ROTARY OBJECT
US3976861A (en) * 1975-06-27 1976-08-24 General Electric Company Apparatus for maintaining a constant surface speed of a rotating work piece being cut by a moving cutting tool
US4733043A (en) * 1985-11-22 1988-03-22 Colt Industries Inc. Ram stabilizing circuit for electrical discharge machine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3174367A (en) * 1962-07-31 1965-03-23 Gen Electric Control system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4897778A (en) * 1983-08-04 1990-01-30 Canon Kabushiki Kaisha Motor control device
GB2276957A (en) * 1993-04-08 1994-10-12 Langston Corp Automatic variable speed anvil system for rotary die-cut apparatus
GB2276957B (en) * 1993-04-08 1996-09-25 Langston Corp Automatic variable speed anvil system for rotary die-cut appartus

Also Published As

Publication number Publication date
DE2060227C3 (en) 1981-08-27
DE2060227A1 (en) 1971-06-24
US3665170A (en) 1972-05-23
FR2070834B1 (en) 1974-09-20
DE2060227B2 (en) 1980-11-20
JPS4931508B1 (en) 1974-08-22
SE360481B (en) 1973-09-24
FR2070834A1 (en) 1971-09-17

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee